> Do I need a license to play music in my establishment?
> Yes! When you purchase a CD, MP3 or similar product, you are granted the right to non-public performance of the material, such as at home or in your car. [...] Although you may have paid for a copy of the music, or are paying a DJ or live band to perform copyrighted music, you are still required by U.S. Copyright Law to obtain the proper licenses for the playback of the songs. [...]
Another article from The Guardian also reports that in 2010, prisons in the UK had to enforce rules to prevent music from being played in the open because licensing costs were becoming too expensive: http://www.theguardian.com/society/2010/jan/19/prison-music-...